"Ahead of the Curve: Two Years at Harvard Business School"
https://www.amazon.com/dp/1594201757?tag=dedasys-20 (yes, it has my affiliate link)
It's written by a pleasantly cynical, yet curious Englishman. It's pretty interesting to hear about the whole experience, the mindset, and some of the people involved. A particularly relevant (for me) passage:
"Rubenstein looked like any other Wall Street elder statesman, in a blue pinstriped suit and owlish tortoiseshell glasses. But the moment he spoke, eh revealed a droll, self-deprecating wit. The difference between corporate leaders and those who start their own businesses, I had observed, was startling. The latter come across as so much smarter and independent-minded, so much less prone to platitudes, so much more comfortable in their own skins. There seems to be an anarchic streak in anyone who has taken a real risk in his life. And even when it has to burn its way through a pinstriped suit, it shows."
That sort of hints at one of the "problems" with teaching business - there's lots of useful stuff you can learn, but there is also some natural, innate talent there, that doesn't necessarily correspond to doing well at an MBA course. So perhaps it's best to get out there, get some experience, and then just do it.